DOI: 10.1002/2018JA025203
Scopus记录号: 2-s2.0-85044870836
论文题名: The Effect of IMF Fluctuations on the Subsolar Magnetopause Position: A Study Using a Global MHD Model
作者: Bonde R.E.F. ; Lopez R.E. ; Wang J.Y.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 4 起始页码: 2598
结束页码: 2604
语种: 英语
英文关键词: magnetopause
; modeling
英文摘要: During southward interplanetary magnetic field (IMF) conditions, the subsolar magnetopause moves inward even under steady solar wind pressure. This is generally referred to as “erosion.” Empirical and computational studies have been conducted to quantify the effect of magnetopause erosion; however, they generally use steady state IMF conditions. Solar wind conditions are not usually constant for very long, especially during such conditions as are present in high-speed streams, which typically have large fluctuations in the IMF. These IMF fluctuations can occur on a range of times scales and amplitudes, resulting in a series of northward and southward IMF intervals imposed on the magnetosphere. We have simulated the effect of such IMF variations on the magnetopause position using a global magnetohydrodynamic model. We find that there are both time lag and hysteresis-like effects on the motion of the magnetopause due to the variation in the magnitude of the southward IMF and that the instantaneous position of the magnetopause can be significantly different from what one would expect from steady state conditions. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114127
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Physics, University of Texas at Arlington, Arlington, TX, United States; State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Bonde R.E.F.,Lopez R.E.,Wang J.Y.. The Effect of IMF Fluctuations on the Subsolar Magnetopause Position: A Study Using a Global MHD Model[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)